Pulley assemblies for use in modular utility systems

ABSTRACT

A counterbalanced vertical track assembly which may be configured with three types of pulley support assemblies are herein disclosed. The first type of pulley support assembly has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element. The second type of pulley support assembly has a pair of opposed pulley modules which include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends. The third type of pulley support assembly has a pair of opposed pulley modules wherein the modules&#39; pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

CROSS-REFERENCE TO RELATED APPLICATION

This application is related to International Application No. PCT/CA2017/050376 filed on Mar. 24, 2017 with the Canadian PCT Receiving Office, and International Application No. PCT/CA2018/051193 filed on Sep. 21, 2018, said applications incorporated hereinto by reference.

TECHNICAL FIELD

The present disclosure relates to modular utility equipment and in particular to modular pulley components for demountable engagement into various configurations of modular assemblies for use in engagement and/or support and/or operation and/or conveyance of equipment for multiple utility purposes.

BACKGROUND

Utility equipment of various forms is used in almost every industry and can range vastly in both size and complexity in order to meet the particular needs of the given industry. The filmmaking industry is one such field requiring various specialized utility equipment. Cinematic techniques in filmmaking, videography, and photography have increased in both scale and complexity. Such cinematic techniques depend on a wide range of utility equipment, in particular camera and lighting support equipment, that provide filmmakers with the technical means to create desired camera shots needed for a scene or a cinematographic effect.

Various types of camera motion support equipment are available and are widely used by filmmakers and photographers. Some commonly used equipment include, for example, handheld and body-supported stabilizers and gimbals which allow for a smooth shot to be taken while the operator is walking, while maintaining the ability to control the pan and tilt movements of the camera. Jibs or cranes provide the ability to add vertical and sideways movement to a shot, and the ability to achieve a high angle shot, depending on the size of the jib. Various types of dollies similarly range in size from the very large to smaller systems to provide smooth rolling camera movement thereby enabling the addition of horizontal motion to a shot.

Sliders, for another example, are essentially a condensed, mountable version of a dolly on a supported track and provide smooth movement along a straight horizontal path. For performing a straight up and down vertical tracking movement, however, existing vertical slider or dolly systems are of limited functionality because they have only short vertical ranges of motion.

There are various other industries that have similar problems with equipment availability, materials support, and functionality, such as for example, staging, lighting, and sound support configurations for live events, construction sites, warehousing, and the like.

SUMMARY

The present disclosure generally relates to sturdy and durable pulley system assemblies for use on a work site or other location wherein the assemblies are configured by interconnecting and securely engaging pulley and cable components with a plurality of modular structural support components and with other selected modules configured for mounting and moving of tools or equipment or instruments or materials around a space.

According to some embodiments disclosed herein, the present pulley system assemblies are configured for engaging, lifting, supporting, manipulating, and moving of cameras, lights, microphones, tools, power tools, sensors, or other equipment or devices or materials, and other types of loads along a vertical path using pulley and cable components fastened by eyebolt or other means to a load support subassembly whereby the supported load may be raised and lowered. According to one aspect, the present pulley system assemblies may cooperate with a rail-rolling module engaged with a vertical rail provided therefore, for more precisely controllable raising and lowering of the supported load. According to another aspect, the weight of a load support assembly and supported load thereon may be counterbalanced by an opposing weighted subassembly, which may also cooperate with a rail-rolling module engaged with a vertical rail provided therefore. According to another aspect, modular assemblies comprising the present pulley system assemblies disclosed herein, may additionally have wheel or caster components to provide a transportable rolling movement of the modular assemblies within and about work site.

More specifically, the present disclosure relates to three types of pulley support assemblies configured for demountable engagement with the structural modules of a vertical track system assembly.

An example of an embodiment of the pulley system assemblies disclosed herein pertains to a first type of pulley support assembly which has a pair of opposed pulley modules having an elongate structural element interposed the two pulley modules which are attached to end plates at both ends of the elongate structural element.

Another example of an embodiment of the pulley system assemblies disclosed herein pertains to a second type of pulley support assembly which has a pair of opposed pulley modules that include male end connectors for demountable engagement of the pulley modules with another module of the system with female ends.

Another example of an embodiment of the pulley system assemblies disclosed herein pertains to a third type of pulley support assembly that has a pair of opposed pulley modules wherein the modules' pulley brackets are repositionable to varying angular orientations by alternating screw mount positions selected on mount components at opposite ends of an elongate structural element.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features of the disclosure will become more apparent in the following detailed description in which reference is made to the appended drawings, wherein:

FIG. 1 is a whole perspective view of an example of a counterbalanced vertical track system according to some of the embodiments disclosed herein;

FIG. 2 is a partially exploded perspective view of the counterbalanced vertical track system shown in FIG. 1 comprising a pulley cross-support assembly, two vertical rail assemblies, a cart base assembly, a load support assembly, and a counterbalance assembly;

FIG. 3 is an exploded perspective view of a first pulley cross-support assembly shown in FIGS. 1 and 2 on bracket mount plates and flat-mount end-plates;

FIG. 4 is an exploded perspective view of a female end and side-opening receptacle socket of some of the structural modules disclosed herein;

FIG. 5 is a partially exploded perspective view of a vertical rail assembly with a corner brace according to some of the embodiments disclosed herein;

FIGS. 6A and 6B are whole and partially exploded perspective views of a second pulley cross-support assembly with spacer plates and male ends according to some of the embodiments disclosed herein;

FIGS. 7A and 7B are whole and partially exploded perspective views of a third pulley cross-support assembly with repositionable pulley assemblies according to some of the embodiments disclosed herein;

FIG. 8 is an exploded perspective view of the pulley mount component and the repositionable pulley assembly shown in FIGS. 7A and 7B;

FIG. 9 is a partially exploded perspective view of the vertical rail assemblies and cart base assembly shown in FIG. 1 ;

FIG. 10 is a partially exploded perspective view of the load support assembly shown in FIGS. 1 and 2 with a rail-rolling module;

FIG. 11 is a partially exploded perspective view of the counterbalance assembly shown in FIGS. 1 and 2 with a rail-rolling module and counterweights;

FIGS. 12A and 12B are whole and partially exploded perspective views of a tube-end eyebolt assembly.

DETAILED DESCRIPTION

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure relates.

As used herein, the term “about” refers to an approximately +1-10% variation from a given value. It is to be understood that such a variation is always included in any given value provided herein, whether or not it is specifically referred to.

As used herein, the term “perspective view” refers to a three-dimensional view of a component or a module or an assembly disclosed herein that portrays height, width, and depth of the component or module or assembly for a more realistic image and representation.

As used herein, the term “top view” refers to an illustration of a component or a module or an assembly that looks directly down onto the top surface of the component or module or assembly.

As used herein, the term “side view” refers to an illustration of a component or a module or an assembly that looks horizontally and directly at a side of the component or module or assembly.

As used herein, the term “bottom view” refers to an illustration of a component or a module or an assembly that looks directly up at the bottom surface of the component or module or assembly.

As used herein, the term “load support assembly” refers to an assembly having components configured for supporting a camera, a light, a microphone, a tool, a power tool, a sensor, an instrument, a tray, a box, a bucket, a bag, or another such device, or a piece of equipment or a container, for conveyance therealong on a vertical track assembly.

As used herein, the term “vertical rail assembly” refers to an assembly having one or more vertical rail components for retained movement there along of a load support assembly and/or of a counterbalance assembly where one or both assemblies are demountably engaged with a rail-rolling module travelling on a corresponding vertical rail provided therefor.

As used herein, the term “pulley cross-support assembly” refers to a structural support assembly having two opposed pulleys and a cable fastened to a load at one end and one or more counterweights at the other end for modulated movement of the load.

As used herein, the term “counterbalance assembly” refers to an assembly which is weighted by one or more counterweight components. The counterbalance assembly may be connected by a cable to an opposing load support assembly wherein the cable travels along one or more pulleys interposed the counterbalance assembly and the load support assembly.

As used herein, the term “counterbalanced vertical track assembly” refers to a modular weight support assembly configured for supporting thereon a camera or other device or other load. In some embodiments, the modular weight support assembly may be interconnected by way of a cable running over a pulley cross-support assembly, with an opposing counterbalance assembly provided therefor, such that the modular weight support assembly may be moveable along a vertical rail assembly therefor whereby the opposing counterbalance assembly negates (i.e. balances) the weight of the load support assembly.

As used herein, the term “cart base assembly” refers to a cart chassis assembly supported on wheels or casters for rolling movement on the ground of the cart base assembly and supported vertical track system.

As used herein, the term “tube segment” refers to an elongate structural element having one of a pulley module, a male end, a female end engaged with one or both ends of the elongate structural element. It is optional for the tube segment to have one or more elongate nut channels extending there along its longitudinal axis. Variously configured elongate structural elements many be used to configure assemblies and subassemblies that incorporate one or more load support subassemblies, vertical rail assemblies, pulley cross-support subassemblies, counterbalance assemblies, counterbalance vertical track assemblies.

As used herein, the term “caster wheel module” refers to a modular assembly having a pivotable wheel, for demountable engagement into a modular assembly to provide a rolling functionality. The wheels may be pneumatic, solid rubber, plastic, or foam.

As used herein, the term “carabiner” refers to a specialized type of shackle comprising a metal loop with a spring-loaded gate for quick and demountable engagement of two or more components.

The embodiments of the present disclosure generally relate to pulley and cable subassemblies that may be used for demountable engagement with the modules disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193 to configure a variety of structural assemblies.

A first embodiment of a pulley cross-support assembly of the present disclosure comprises two of a first example of pulley module demountably engaged with a tube segment via end plates attached to the ends of the tube segment.

A second embodiment of a pulley cross-support assembly of the present disclosure comprises two of a second example of pulley module demountably engaged with male end assemblies for reversible attachment of the pulley modules with modules having female ends.

A third embodiment of a pulley cross-support assembly of the present disclosure comprises two of a third example of pulley module demountably engaged and repositionable on pulley mount components attached at opposing ends of a tube segment.

As disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193, certain elongate structural elements of the system may have one or two male ends for secure demountable engagement with elongate structural elements having one or two female ends demountably engageable with one of the male ends. An elongate structural element's female end may be configured as a “rotator receptacle” or a “joiner receptacle” or a “side-opening receptacle” that is contained within a module's tube segment.

According to one aspect, each of the male ends may comprise a cylindrical body having at least one linear set of prongs or two or more spaced-apart linear sets of prongs about the circumferential surface of the cylindrical body wherein each set of prongs has two or more spaced-apart prongs. According to some aspects, some of the male ends may have two linear sets of prongs spaced apart around the circumference of the cylindrical body, or alternatively, between three and twelve sets of prongs spaced apart around the circumference of the cylindrical body. According to some aspects, each set of prongs may have between one to eight spaced-apart prongs. According to some aspects, some of the male ends may have no prongs.

According to another aspect, each of the female ends may have a cylindrical receptacle for receiving and engaging therein a male cylindrical body. The female receptacle may have at least one linear channel or prong-retaining slot for slidingly receiving and engaging therein the prongs of the male ends. According to some aspects, some of the female ends may have receptacles with two linear channels or prong-retaining slots spaced apart along the length of the receptacle for receiving and engaging therein a male cylindrical body having two linear sets of prongs spaced apart around the circumference of the cylindrical body. Alternatively, some of the female ends may have receptacles with between three to twelve spaced-apart linear channels or prong-retaining slots for slidingly receiving and engaging therein a male cylindrical body having between three to twelve linear sets of prongs spaced apart around the circumference of the cylindrical body. According to another aspect, a female end may have no linear channels or prong-retaining slots for demountably engaging a male cylindrical body of a male end having no prongs. According to another aspect, some of the female ends may be provided with a locking assembly and/or one or more fasteners for demountable engagement therewith one of the male ends.

An example of a counterbalanced vertical track assembly 5 is illustrated in FIGS. 1 and 2 wherein the track assembly 5 generally comprises a first example of a pulley cross-support assembly 10, two vertical rail assemblies 15, a cart base assembly 20, a load support assembly 25, and a counterbalance assembly 30.

A first pulley cross-support assembly 10 is illustrated in FIG. 3 wherein the assembly generally comprises a cable with looped ends 32 and carabiners 34 running across two pulley modules 35 demountably engaged at opposing ends of a first example of a tube segment 40. According to one embodiment, a first pulley module 35 generally comprises a pulley 45 rotating around a shaft 50 reversibly fixed by set screws 55 in between two pulley brackets 60. The pulley brackets 60 are mounted at their threaded bores 62 by screws 65 to a bracket mount plate 70 which is demountably engaged by its locator pegs 71 and a screw 72 to locator holes 73 and center threaded bore 74 or threaded insert in a flat-mount end plate 75 fastened to the first tube segment 40 by tube-end screws 80 passed through unthreaded bores 85 for threadable engagement within thread-forming slots 90.

Channel openings 95 in the flat-mount end plate 75 allow for passage of T-nuts 100 into nut channels 105, provided for secure attachment of a male member side-mount assembly 110 or other components along the length of a tube segment. As illustrated in FIG. 3 , two male member side-mount assemblies 110 are downwardly engaged with the first tube segment 40 for attachment of the vertical rail assemblies 15, as described in further detail below in reference to FIGS. 4 and 5 .

For this same purpose, a tube segment may also have secured within its inner contours, one or more tube-middle threaded insert mounts 115 comprising a plurality of threaded insert holes 120 wherein threaded inserts 125 may be provided for attachment of additional male member side-mount assemblies 110 or other components (not shown) by a bolt or screw passed through side-mount bores 130 for threadable engagement with a corresponding threaded insert 125. A tube-middle threaded insert mount 115 may be securely fixed in place within a tube segment by a set screw or alternatively, by use of a polymeric adhesive or brazing or crush ribs, and the like.

As illustrated in FIG. 3 , two male member side-mount assemblies 110 are demountably engaged by a screw or bolt with each a T-nut 100 thereby secured within the downward-facing nut channel 105. According to one embodiment, a male member side-mount assembly 110 comprises a bolt 135 passed through the center of a male component 140 secured against a wide pivot component 145 at an octagonal boss 150 engaged within an octagonal recess 155 in the proximal end of the male component 140. The wide pivot component 145 is engaged next with a concave mount component 160 where they are held together by the bolt 135 and locator teeth 165 on the wide pivot component 145 inserted into locator holes 170 in the corresponding face of the concave mount component 160.

As disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193, certain modules of the system may include male ends for secure demountable engagement of the modules with other modules of the system having cooperating female ends. One such example is the male member side-mount assembly 110 with male component 140 comprising four linear sets of prongs 175 positioned around the circumferential surface of the male component provided for mating engagement of the male assembly with a corresponding female end.

FIG. 4 illustrates a first example of a female end 180 of the modular system of the present disclosure, and related applications, comprising a side-opening receptacle socket 185. The side-opening receptacle socket 185 may comprise cooperatively-shaped male member channels 190 and prong-retaining slots 195 which securely engage the outer contours of an inserted male end assembly. Once inserted, male assembly 110 may be fixed within the side-opening receptacle by a bolt 135 passed through a tube bore 200 in a second example of a tube segment 205, an unthreaded bore 210 in the side of the receptacle socket 185, and through an unthreaded bore 215 in the male component 140 (as indicated, for example, in FIG. 3 ) to be threadably engaged at a threaded insert 125 located centrally in the proximal side of a side-opening receptacle cover 220, which locks together the cooperating modules until the bolt 135 is removed. The side-opening receptacle cover 220 may also comprise prong-retaining slots 225 (shown in FIG. 5 ) for matingly engaging a corresponding linear set of prongs 175 of a secured male end assembly.

Side-opening receptacle socket 185 additionally comprises side channels 230 wherein it is slid into the corresponding end of the tube segment 205 against the inward-facing edges of the nut channels 235, where it is secured by tube-end screws 80 passed through unthreaded bores 240 in the socket 185 to be threadably engaged within thread-forming slots 245 on the inner contours of the tube segment 205.

According to some embodiments, the outer contours of the side-opening receptacle socket 185 may provide bores or slots for one or more threaded inserts 125 or hex nuts 247 to be secured when assembled within a tube segment 205 where provided therefor are one or more side-mount bores 248 through which a screw or a bolt 135 may secure additional male member side-mount assemblies 110 or other component as disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193. Additional male member assemblies may also be secured along the side of the tube segment 205 by a bolt threadably engaged with a T-nut 100 passed through the socket's channel openings 250 into the nut channels 235, and therein secured.

Described in reference to FIG. 5 , according to a preferred embodiment of female ends and male end assemblies of the system as presently disclosed and disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193, the sideway opening of the receptacle sockets 185 and corresponding tube segments (as shown in FIG. 5 , for example, illustrating one of the vertical rail assemblies 15 of the vertical track system 5) comprise a narrow end 252 for demountable engagement of the male assembly 110 in alignment with indents 255 on two sides of the assembly's wide pivot component 145.

The side-opening receptacle cover 220 also comprises indents 260 for mating engagement with the narrow end 252, to therefore securely engage itself, an inserted male assembly, and optionally the receptacle socket 185 where tube-end screws 80 are optionally not installed as previously described, allowing for all three components to be demounted from the corresponding tube segment until a bolt 135 is inserted.

As illustrated in FIG. 5 , a vertical rail assembly 15 may comprise a first example of a double-receptacle side-opening module 265 wherein at each end a male member side-mount assembly 110 of the first pulley cross-support assembly 10 and the cart base assembly 20 (not shown) are securely held when bolts 135 are passed through tube bores 270 of a third example of a tube segment 272, and the unthreaded bore 210 (shown in FIG. 4 ) in the side of the receptacle socket 185, and the unthreaded bore 215 in the male component 140, and then threadably engaged with a threaded bore or threaded insert 125 in the cover 220.

For further reinforcement and stability, a vertical rail assembly 15 may comprise, at one or both ends, corner braces 275 having two concave faces for fitted engagement with the side-opening module 265 and the corresponding perpendicular tube segment of the first pulley cross-support assembly 10 and the cart base assembly 20. As configured in FIG. 5 , the corner brace 275 is securely attached to the side-opening module 265 by a screw 280 passed through the corner brace and the side-mount bore 285 and there threadably engaged with the threaded insert 125 provided in the side of the receptacle socket 185. A second screw 290 is threadably engaged with a T-nut 100 held in the nut channel of the intersecting module's tube segment.

As illustrated in FIG. 6 , a modular assembly (as presently disclosed and disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193) may comprise one or more of a second example of a pulley cross-support assembly 300 across which a running cable is supported on pulleys 45 to move a corresponding load such as a camera, a light, a microphone, a tool, a power tool, a sensor, a tray, a box, a bucket, a bag, another device, or a piece of equipment or a container. According to one embodiment, the assembly 300 may comprise two male pulley assemblies 305 wherein each is secured by a bolt 135 into a receptacle socket 185 at each end of a second a double-receptacle side-opening module 310.

A male pulley assembly 305 may comprise the pulley module 35, as previously described in reference to FIG. 3 , here mounted to a male spacer plate 315 by screws 65 passed through holes in the spacer plate to be threadably engaged with the pulley module's threaded bores 62.

Each of the male pulley assemblies 305 additionally comprises a male member flat-mount assembly 320 for secure engagement with the side-opening module 310 or another module of the system having a female end as presently disclosed and as disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193. The male member flat-mount assembly 320 is secured to the male spacer plate 315 by a bolt 135 threadably engaged with a center threaded bore 325 or threaded insert located at the center of the male spacer plate 315. The male member flat-mount assembly 305 is assembled by the bolt 135 passed through the center of the male component 140 and wide pivot component 145, as previously described in reference to FIG. 3 , but here securing the wide pivot component 145 by its locator teeth 165 at locator holes 330 in a flat mount component 335 additionally comprising a center through-hole 340 where the bolt 135 is passed through to be threadably engaged with the center threaded bore 325 of the male spacer plate 315 whereon the male assembly 320 is therefore securely engaged by the bolt and locator pegs 345 at locator holes 348 in the corresponding face of the male spacer plate 315.

As illustrated in FIGS. 7 and 8 , the modular system (as presently disclosed and disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193) may comprise one or more of a third example of a pulley cross-support assembly 350 across which a running cable is supported on pulleys 45 to move a corresponding load such as a camera, a light, a microphone, a tool, a power tool, a sensor, a tray, a box, a bucket, a bag, an other device, or a piece of equipment or a container. According to one embodiment, the assembly 350 comprises two repositionable pulley assemblies 355 each secured by bolts 360 to a pulley mount component 365.

A pulley mount component 365 may comprise side channels 370 wherein the pulley mount 365 is slid into a corresponding end of a fourth example of a tube segment 375 against the inward-facing edges of the nut channels 380, where the pulley mount 365 is secured by tube-end screws 80 passed through unthreaded bores 385 in the pulley mount component 365 to be threadably engaged within thread-forming slots 390 on the inner contours of the fourth tube segment 375. Alternatively, or in addition to the tube-end screws, a pulley mount component 365 may be secured within a tube segment 375 by side-mount screws 395 passed through side-mount bores 400 to be threadably engaged with threaded bores 405 or threaded inserts in the outer contours of the mount component.

When not occupied by side-mount screws 395, the threaded bores 405 may also be used to securely engage a male member side-mount assembly 110, as previously described. For this same purpose, the pulley cross-support assembly 350 may also have secured within its inner contours, one or more of the tube-middle threaded insert mounts 115, as previously described. Additionally, side-mount assemblies 110 may be secured to the tube segment 375 by a T-nut held within the nut channels 380.

As illustrated in FIG. 8 , according to a preferred embodiment, a repositionable pulley assembly 355 comprises a pulley 45 rotating on a pulley shaft 410 to which it is adhered at a wide mid-section 412. The pulley shaft 410 is set between two repositionable pulley brackets 415 in holes 417 by two of bolts 360 passed through holes 420 in the brackets and through-holes 425 in the pulley shaft to be threadably engaged with two of eight of threaded bores 430 in the pulley mount component 365. For further reinforcement, additional bolts 360 may be threadably engaged with additional threaded bores 430. The angular orientation of the repositionable pulley brackets 415 and pulley 45 is incrementally variable relative to the supporting assembly by changing the selection of the threaded bores 430 at which the bolts 360 are threadably engaged.

To prevent disengagement of a system assembly's cable from a pulley cross-support assembly 350, a repositionable pulley assembly 355 may additionally comprise a cable-retaining component 435 demountably engaged by a retaining screw 440 passed through one of two holes 445 through the pulley shaft 410 to be threadably engaged with a threaded bore in the proximal end of the cable-retaining component 435.

As illustrated in FIG. 9 , a vertical track system 5 may comprise various sizes and configurations of vertical rail assemblies and cart base assemblies. As previously described in reference to FIG. 5 , the side-opening modules 265 of the vertical rail assemblies 15 are securely fastened at the top to a pulley cross-support assembly by male member side-mount assemblies 110 and corner braces 275. In the same way, the bottom ends of the vertical rail assemblies 15 are securely engaged by T-nuts 100 within the nut channels of the corresponding modules of the cart base assembly 20.

The cart base assembly 20 may comprise a third length of double-receptacle side-opening module 450 connected centrally by a fourth length of double-receptacle side-opening module 455 on two male member side-mount assemblies 110. The vertical rail assemblies 15 are there fastened to the cart base assembly 20 by the side-mount assemblies 110 and corner braces 275 securely engaged by screws or bolts with T-nuts 100 held within the upwardly facing nut channels of the side-opening modules 450.

The cart base assembly 20 provides a rollable base on which the vertical track assembly 5 is movable by pushing or pulling the utility cart in any direction on the four 360° pivotable caster wheel modules 460. Alternatively, in place of wheel modules, similar assemblies may be configured with other modules of the system at its base for standing assemblies, such as foot modules “580”, “585”, “590” or end-cap components “680” shown in FIGS. 24, 25, and 33 of International Application No. PCT/CA2017/050376, or end-caps 465 of the present disclosure described in further detail below in reference to FIG. 10 .

The cart base assembly 20 may comprise four caster wheel modules 460 each comprising a male member flat-mount assembly 320 secured to the top-face of a threaded mount component 470. The male member flat-mount assembly 320 is first aligned against the top-face of the threaded mount component 470 by locator pegs 345 on the bottom of the flat mount component 335, as described previously in reference to FIG. 6 , here inserted into locator holes 475 in the top-face of the mount component 470 where, with a bolt passed through the center of the male assembly 320 and threadably engaged with the center threaded bore 480 or threaded insert located at the center of the mount component 470, the male assembly 320 is demountably secured. A castor wheel 485 is rotationally engaged with the threaded mount component 470 by mount screw 490 and lock nut 495 or other means of attachment with the underside of the mount component 470.

The four caster wheel modules 460 are demountably engaged with four of a first length of single-receptacle side-opening module 500 connected centrally by two more of side-opening modules 450 which are connected by male side-mount assemblies 110 to the central rail supporting side-opening modules 450.

For added stability of the vertical track assembly 5 and supported camera or other device or load, a cart base assembly 20 may additionally comprise one or more counterweight components 505 as disclosed in International Application No. PCT/CA2017/050376 and shown in FIG. 9 mounted by screws 510 passed through holes 515 in the counterweight components 505 to be threadably engaged by T-nuts 100 securely held within the nut channels of the side-opening modules 450.

As illustrated in FIG. 10 , a modular assembly (as presently disclosed and disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193) may additionally comprise a load support assembly on which a camera, a light, a microphone, a tool, a power tool, a sensor another device or a load may be positioned and moved along a vertical rail assembly with its weight transferred across a pulley cross-support assembly by a cable and negated by a counterbalance assembly as described in further detail below in reference to FIGS. 11 and 12 .

A vertical track system 5 may comprise the load support assembly 25 suspended from the cable with looped ends 32 and a carabiner 34, as shown in FIG. 3 , to an eyebolt 520 securely engaged with the side of a second length of single-receptacle side-opening module 525 by a concave mount component 160 and a T-nut 100 securely held in the top-facing nut channel of the side-opening module 525.

For controlled vertical movement of a load support assembly and supported load, the assembly 25 may be retained and is moveable on a vertical rail assembly 15 by a rail-rolling module 530 such as the rail-rolling modules previously disclosed in International Application No. PCT/CA2017/050376. The cable-suspended side-opening module 525 is demountably engaged with a side of the rail-rolling module 530 via a male member flat-mount assembly 320 and male spacer plate 315 mounted by screws 65 to the side of the rail-rolling module at threaded bores 535.

For panning and tilting movement of a supported camera or other device on the load support assembly 25, a box-shaped assembly as shown in FIG. 10 may be configured from additional modules of the system as presently disclosed and disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193. Attached downward from the single-receptacle side-opening module 525 is a single-receptacle rotator module 540 which may be locked or rotated 360-degrees on the male side-mount assembly 110, as described in further detail in International Application No. PCT/CA2017/050376. Two of a third length of single-receptacle side-opening module 545 are demountably engaged on side-mount assemblies 110 held by T-nuts 100 in the nut channels of the rotator module 540. Downward from the side-opening modules 545, two of a fourth length of single-receptacle side-opening module 550 are attached via side-mount bores and tube-middle threaded insert mounts 115 of modules 545.

Attached inwardly from the two side-opening modules 550 are two of a male bracket assembly 555 which are repositionable along the side-opening modules 550 where secured by two out-facing multi-angle mount brackets 560 secured by screws 565 to T-nuts 100 or by the clamping force applied by bolts 135 pulling the concave shaped components firmly in against the side of the corresponding tube segments. The in-facing male bracket assemblies 555 comprise plate wedges 570 having fastened thereon by screws 565 a bracket mount plate 575, and thereon by screws 65 a male mount spacer plate 315 from which two in-facing male flat-mount assemblies 320 are provided for locked or 360-degree pivotable connection of a double-receptacle rotator module 580.

A camera or other device is tiltable on the double-receptacle rotator module 580 where connected by a mount-screw 585 to a dovetail plate 590 which is demountably secured within a dovetail mount assembly 595 by tension applied by a screw knob 600. The dovetail mount assembly is attached by screws 565 to the two additional plate wedges 570 which are positionable and secured against the rotator module 580 by the clamping force applied by a down-facing multi-angle mount bracket 560 engaged with the plate wedges by bolts 135.

A load support assembly 25 may additionally comprise an operating handle assembly 605 mounted to the side of rotator module 580 or another module of the support assembly 25. For a bumper-like protective end, an end-cap 465 may additionally be attached by a screw 565 to a flat-mount end plate 75 of the single-receptacle side-opening modules of the load support assembly.

As illustrated in FIG. 11 , a modular assembly (as presently disclosed and disclosed in International Application No. PCT/CA2017/050376 and International Application No. PCT/CA2018/051193) may additionally comprise a counterbalance assembly which, by attachment to a cable passing over a pulley cross-support assembly and attached to a load support assembly, negates the weight of the load support assembly and mounted camera or other device or load which may be positioned and moved along a vertical rail assembly.

A counterbalanced vertical track system 5 may comprise a counterbalance assembly 30 suspended from the cable with looped ends 32 and a carabiner 34, as shown in FIG. 3 , to an eyebolt 520 securely engaged with the side of a single-receptacle side-opening module 525 by a concave mount component 160 and a T-nut 100 securely held in the top-facing nut channel 610 in the tube segment 615 of the side-opening module 525.

For varying weights of the counterbalance assembly 30 to match varying weights of corresponding load support assembly 25 and mounted camera or other device or load, one or more counterweight components 505 may be mounted by screws 510 passed through holes 515 in the counterweight components 505 to be threadably engaged by T-nuts 100 securely held within the nut channels of the side-opening module 525.

For retained vertical movement of a corresponding load support assembly and supported camera or other device or load, a counterbalance assembly 30 may be retained and is moveable on a vertical rail assembly 15 by a rail-rolling module 530 such as the rail-rolling modules previously disclosed in International Application No. PCT/CA2017/050376. The cable-suspended side-opening module 525 is demountably engaged with a side of the rail-rolling module 530 via a male member flat-mount assembly 320 and male spacer plate 315 mounted by screws 65 to the side of the rail-rolling module at threaded bores 535.

As illustrated in FIG. 12 , a counterbalance assembly can be freely suspended from a cable with looped ends 620 and carabiner 625 by a tube-end eyebolt assembly 630 which comprises an eyebolt with lock nut 635 threadably engaged with a center threaded bore 640 in an eyebolt-mount end plate 645 which may fastened by screws 80 passed through unthreaded bores 650 to be threadably engaged with thread-form ing slots 655 in a corresponding tube segment of another module of the system such as side-opening module 525.

One or more counterweight components 505 may be mounted by screws 510 passed through holes 515 in the counterweight components 505 to be threadably engaged by T-nuts 100 securely held within the nut channels of the side-opening module 525.

For a bumper-like protective end, a dome pad module 660 may additionally be included in an assembly by demountable engagement of its male member flat-mount assembly 320 within the receptacle socket 185 of the side-opening module 525.

It is to be noted that the present male member side-mount assemblies 110, and male member flat-mount assemblies 320 are configured for rotatable or locked engagement with the rotator receptacles “11” shown in FIGS. 1, 4, etc. of International Application No. PCT/CA2017/050376. It is to be noted that the present male member side-mount assembly 110, and male member flat-mount assembly 320 are also configured for demountable engagement with the joiner receptacles “211” shown in FIGS. 6, 17, etc. of International Application No. PCT/CA2017/050376. It is to be noted that the present male member flat-mount assembly 320 is also configured for demountable engagement with the 45° side-mount bracket module “350”, male member mounting block modules “355”, “356”, “357”, “358”, “359”, “360”, the 5° increment adjustable male member mount module “380”, and the male mount slider component “450” shown in FIGS. 13, 14, 15, 17, as well as with a castor wheel module “560”, a leveling foot module “580”, an end-cap module “625”, or a male dome pad end-cap module “650” shown in FIGS. 23, 24, 28, and 30 of International Application No. PCT/CA2017/050376.

The length of the pulley cross-support assemblies disclosed herein may be, for example, 6″, 12″, 18″, 24″, 32″, 36″, 42″, 48″, 60″, 72″, 84″, 96″ and therebetween. The length of the pulley cross-support assemblies disclosed herein may be, for example, 15 cm, 30 cm, 45 cm, 60 cm, 81 cm, 91 cm, 106 cm, 122 cm, 150 cm, 180 cm, 210 cm, 240 cm, and therebetween. It is suitable to adjust the width of the present pulley assemblies to increase proportionally with an increase in the length of the pulley assemblies to maintain and preserve the robustness, stability, and durability of the pulley assemblies when in use. It is suitable to adjust the dimensions of the female end components and the male end components in proportion to the width and length of the pulley assemblies to maintain and preserve the robustness, stability, and durability of the pulley assemblies when in use.

NUMBERING KEY

-   -   5—counterbalanced vertical track assembly (FIGS. 1 and 2 )     -   10—first pulley cross-support assembly     -   15—vertical rail assembly     -   20—cart base assembly     -   25—load support assembly     -   30—counterbalance assembly     -   32—cable with looped ends     -   34—carabiners     -   35—pulley module (FIG. 3 )     -   40—first tube segment     -   45—pulley     -   50—shaft     -   55—set screws     -   60—pulley brackets     -   62—threaded bores     -   65—screws     -   70—bracket mount plate     -   71—locator pegs     -   72—screw     -   73—locator holes     -   74—center threaded bore     -   75—flat-mount end plate     -   80—tube-end screws     -   85—unthreaded bores     -   90—thread-forming slots     -   95—channel openings     -   100—T-nut     -   105—nut channels     -   110—male member side-mount assembly     -   115—tube-middle threaded insert mounts     -   120—threaded insert holes     -   125—threaded insert     -   130—side-mount bores     -   135—bolt     -   140—male component     -   145—wide pivot component     -   150—octagonal boss     -   155—octagonal recess     -   160—concave mount component     -   165—locator teeth     -   170—locator holes     -   175—prongs     -   180—first female end (FIG. 4 )     -   185—side-opening receptacle socket     -   190—male member channels     -   195—prong-retaining slots     -   200—tube bore     -   205—second tube segment     -   210—unthreaded bore     -   215—male unthreaded bore     -   220—side-opening receptacle cover     -   225—prong-retaining slots     -   230—side channels     -   235—nut channels     -   240—unthreaded bores     -   245—thread-forming slots     -   247—hex nuts     -   248—side-mount bores     -   250—socket channel openings     -   252—narrow end     -   255—indents     -   260—cover indents     -   265—first double-receptable side-opening module (FIG. 5 )     -   270—tube bore     -   272—third tube segment     -   275—corner brace     -   280—screw     -   285—side-mount bore     -   290—screw     -   300—second pulley cross-support assembly (FIG. 6 )     -   305—male pulley assembly     -   310—second double-receptable side-opening module     -   315—male spacer plate     -   320—male member flat-mount assembly     -   325—center threaded bore     -   330—locator holes     -   335—flat mount component     -   340—center through-hole     -   345—locator pegs     -   348—locator holes     -   350—third pulley cross-support assembly (FIGS. 7 and 8 )     -   355—repositionable pulley assembly     -   360—bolts     -   365—pulley mount component     -   370—side channels     -   375—fourth tube segment     -   380—nut channels     -   385—unthreaded bores     -   390—thread-forming slots     -   395—side-mount screws     -   400—side-mount bores     -   405—threaded bores     -   410—pulley shaft     -   412—wide mid-section     -   415—repositionable pulley brackets     -   417—shaft holes     -   420—bolt holes     -   425—bolt through-holes     -   430—threaded bores     -   435—cable-retaining component     -   440—retaining screw     -   445—holes     -   450—third double-receptable side-opening module     -   455—fourth double-receptable side-opening module     -   460—caster wheel module (FIG. 9 )     -   465—end-cap     -   470—threaded mount component     -   475—locator holes     -   480—center threaded bore     -   485—caster wheel     -   490—mount screw     -   495—lock nut     -   500—first single-receptacle side-opening module     -   505—counterweight components     -   510—screws     -   515—holes     -   520—eyebolt (FIG. 10 )     -   525—second single-receptacle side-opening module     -   530—rail-rolling module     -   535—threaded bores     -   540—single-receptacle rotator module     -   545—third single-receptacle side-opening module     -   550—fourth single-receptacle side-opening module     -   555—male bracket assembly     -   560—multi-angle mount brackets     -   565—screws     -   570—plate wedges     -   575—bracket mount plate     -   580—double-receptacle rotator module     -   585—mount-screw     -   590—dovetail plate     -   595—dovetail mount assembly     -   600—tension screw knob     -   605—handle assembly     -   610—nut channel     -   615—fifth tube segment (FIGS. 11 and 12 )     -   620—cable with looped ends     -   625—large carabiner     -   630—tube-end eyebolt assembly     -   635—large eyebolt with lock nut     -   640—center threaded bore     -   645—eyebolt-mount end plate     -   650—unthreaded bores     -   655—thread-forming slots     -   660—dome pad module 

The invention claimed is:
 1. A pulley assembly for use with a kit of portable modular components to configure structural assemblies therewith, the pulley assembly comprising: an elongate structural component, wherein the elongate structural component comprises one or more nut channels provided therealong for slidingly receiving and retaining therein one or more threadably engageable nuts provided for demountable engagement of a first selected modular component; and a pair of pulley modules demountably engaged with opposite ends of the elongate structural component, the pair of pulley modules configured for suspending therefrom and rotationally cooperating therewith a load-bearing cable.
 2. A pulley assembly according to claim 1, wherein the elongate structural component is a hollow tube segment.
 3. A pulley assembly according to claim 1, wherein one or more male end components are demountably engaged with said one or more threadably engageable nuts retained within said one or more nut channels, wherein male end components are configured for demountable engagement with a female end provided therefor at an end of a second selected modular component.
 4. A pulley assembly according to claim 3, additionally comprising a pair of corner braces for supporting the juncture of each of said male end components and said female ends.
 5. A pulley assembly according to claim 1, wherein the elongate structural component is provided with one or more threaded bores configured for demountable engagement therewith a third selected modular component.
 6. A pulley assembly according to claim 5, wherein one or more male end components are demountably engaged with said threaded bores, wherein each of the male end components is configured for demountable engagement with a female end provided therefor at an end of a fourth selected modular component.
 7. A pulley assembly according to claim 1, wherein end plates are affixed to the ends of the elongate structural component and are configured for demountable engagement of the pulley modules.
 8. A pulley assembly according to claim 1, wherein each of the ends of the elongate structural component has a mount component demountably engaged thereto, wherein the mount component is configured for demountable engagement of one of the pulley modules.
 9. A pulley assembly according to claim 8, wherein the mount components comprise a plurality of threaded holes configured for demountable engagement of the pair of pulley modules at a plurality of angular orientations relative to the elongate structural component.
 10. A pulley assembly according to claim 1, wherein each of the pair of pulley modules is provided with a cable-retaining component.
 11. A pulley assembly for use with a kit of portable modular components to configure structural assemblies therewith, the pulley assembly comprising: an elongate structural component, wherein the elongate structural component is provided with one or more nut channels therealong for slidingly receiving and retaining therein one or more threadably engageable nuts provided for demountable engagement of a first selected modular component, the elongate structural component comprising a female end at both ends; and a pair of pulley modules wherein each of the pair is demountably engaged with each a male end component for demountable engagement with said female ends, the pair of pulley modules configured for suspending therefrom and rotationally cooperating therewith a load-bearing cable.
 12. A pulley assembly according to claim 11, wherein the elongate structural component is a hollow tube segment.
 13. A pulley assembly according to claim 11, wherein one or more male end components are demountably engaged with said one or more threadably engageable nuts retained within said one or more nut channels, wherein each of the male end components is configured for demountable engagement with a female end provided therefor at an end of a second selected modular component.
 14. A pulley assembly according to claim 13, additionally comprising a pair of corner braces for supporting the juncture of each of said male end components and said female ends.
 15. A pulley assembly according to claim 11, wherein the elongate structural component is provided with one or more threaded bores configured for demountable engagement therewith a third selected modular component.
 16. A pulley assembly according to claim 15, wherein one or more male end components are demountably engaged with said threaded bores, wherein each of the male end components is configured for demountable engagement with a female end provided therefor at an end of a fourth selected modular component.
 17. A pulley assembly according to claim 11, wherein each of the pair of pulley modules is provided with a cable-retaining component. 